Incandescent-gas-lighting apparatus.



No. 730.364, PATBNTBD'JUNE 9, 1903.

T. GORDON. f

INQA'NDBSGENT GASLI'GHTING APPARATUS.

Brummen Hmm JULY 26.1901.

UNITED! I STATES Patented J' une 9, 1903.

PATENT OFFICE.

lNCANDESCENT-GAS-LIiGHTING APPARATUS.

IaPECIFI-CLAIIOLN' forming part of Letters Patent No. 730,364, dated June 9, 1903.

Application tiled July 26, 1901. Serial No. 69,787. (No model.)

To @ZZ whom it may concern.-

Be it known that I, THOMAS GORDON, a citizen ofthe United States, residing at the city of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Incandescent Gas-Lighting Apparatus, of which the following is a specification.

This invention relates to that class of incandescent gas-lighting apparatus in which compressed air and gas are commingled preparatory to their passage to and combustion at the burner, my object herein being to provide a simple and efficient construction whereby the supply of gas and air to the in duction and mixing chamber may be nicely regulated and whereby au intimate commingling of the same may'be effected.

To this end my invention, stated generally, comprises a novel construction and arrangement of the air and gas supply pipes and of a cock or valve device therefor, together with means for regulating the volume of gas and the pressure of the air delivered to the induction and mixing chamber, as will be hereinafter particularlyT described and claimed.

In the drawings, Figure 1 is a longitudinal section of a portion of a lamp embodying my invention. Fig. 2 is a transverse section, as on the line 2 2 of Fig. 1.

A represents the burner-head; B, the induction and mixing chamber below the same, and C D the gas nd air supply pipes, respectively, having communication with the interior of the said chamber. These pipes are provided with automatic regulators c d, of any approved construction, whereby the volume of gas and the pressure of the air delivered to the indu ction-chamber may be nicely regulated to insure efficient results.' I have'discovered that by adjusting the gas-regulator to admit the gas below its normal pressure and the air above its norm al pressure an intimate and efficient commingling of the air and gas is attained.

In the present instance the gas-supply pipe is screwed onto the lower end of a section E, which is screwed upon and depends-from the body of the chamber B, and the air-supply pipe extends into the lower portion of said section. This section isprovided with three vertical ports, two, e, of which afford communication between the upper and lower portions of the section, while the other or central port, d, is closed at its lower end and has lateral communication with the air-supply pipe. The upper end of the central port communicates with a tube b, leading into the induction and mixing chamber, while the upper portion ply of air and gas to the induction and mixing chamber may be nicely regulated.

I preferably arrange axially within the tube b a stem or pin b2, between which and the inner wall of the tube is formed an annular duct for the passagey of the air from `the supply-pipe to the chamber B, this duct being of just sufficient area to permit the ingress of a predetermined volume of air to the said chamber. When an ordinary tube of sufficient iineness for the passage of a proper quantity of air is employed, a disagreeable hissing sound is occasioned bythe passage of the air therethrough; but when a larger tube with an annular air-duct therein is provided, as above described, the objectionable noise is effectually obviated.

By the use of tubes instead of simple ori? fices for the ingress of the gas to the induction and mixing chamber the hissing of the gas during its ingress to the latter is also overik come.

I claiml. In a gas-lighting apparatus, the combination with the induction and mixing chamber, of the section below the same provided with air and gas passages, the annular duct leading from the air-passage to the said chamberV and having an open unobstructed outlet, the elongated gas-ingress tubes aording comuninication between the gas-passages and said chamber, an air-supply pipe communicating with the air-passages, a gas-supplypipe com- IOD municating with the `gas-passages, and a cook l tubes affording Communication between the for controlling the said air and gas passages, gas-passage and the induction or mixing substantially as described. Chamber, and a cock for Controlling' the air 2. In a gas-lighting apparatus,the eonibinaand gas passages.

tion with an induction and inixingfohalnber, In testimony whereoi` I afiix my signature of a section below the same provided with an in presence of two Witnesses.

internal air-passage and a gas-passage surl THOMAS GORDON' rounding,` the latter, an elongated tube arranged at the mouth of the air-passage, a pin arranged in said tube to form an annular duet therein for the passage of the air7 elongated IVitnesses:

ANDREW V. GROUPE, SADIE NOLAN. 

